dm: x86: spi: Convert ICH SPI driver to driver model PCI API
At present this SPI driver works by searching the PCI buses for its
peripheral. It also uses the legacy PCI API.
In addition the driver has code to determine the type of Intel PCH that is
used (version 7 or version 9). Now that we have proper PCH drivers we can
use those to obtain the information we need.
While the device tree has a node for the SPI peripheral it is not in the
right place. It should be on the PCI bus as a sub-peripheral of the LPC
device.
Update the device tree files to show the SPI controller within the PCH, so
that PCI access works as expected.
This patch includes Bin's fix-up patch from here:
https://patchwork.ozlabs.org/patch/569478/
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/dts/qemu-x86_q35.dts b/arch/x86/dts/qemu-x86_q35.dts
index 145e811..5d601b3 100644
--- a/arch/x86/dts/qemu-x86_q35.dts
+++ b/arch/x86/dts/qemu-x86_q35.dts
@@ -62,24 +62,28 @@
0x42000000 0x0 0xd0000000 0xd0000000 0 0x10000000
0x01000000 0x0 0x2000 0x2000 0 0xe000>;
- irq-router@1f,0 {
+ pch@1f,0 {
reg = <0x0000f800 0 0 0 0>;
- compatible = "intel,irq-router";
- intel,pirq-config = "pci";
- intel,pirq-link = <0x60 8>;
- intel,pirq-mask = <0x0e40>;
- intel,pirq-routing = <
- /* e1000 NIC */
- PCI_BDF(0, 2, 0) INTA PIRQG
- /* ICH9 UHCI */
- PCI_BDF(0, 29, 0) INTA PIRQA
- PCI_BDF(0, 29, 1) INTB PIRQB
- PCI_BDF(0, 29, 2) INTC PIRQC
- /* ICH9 EHCI */
- PCI_BDF(0, 29, 7) INTD PIRQD
- /* ICH9 SATA */
- PCI_BDF(0, 31, 2) INTA PIRQA
- >;
+ compatible = "intel,pch9";
+
+ irq-router {
+ compatible = "intel,irq-router";
+ intel,pirq-config = "pci";
+ intel,pirq-link = <0x60 8>;
+ intel,pirq-mask = <0x0e40>;
+ intel,pirq-routing = <
+ /* e1000 NIC */
+ PCI_BDF(0, 2, 0) INTA PIRQG
+ /* ICH9 UHCI */
+ PCI_BDF(0, 29, 0) INTA PIRQA
+ PCI_BDF(0, 29, 1) INTB PIRQB
+ PCI_BDF(0, 29, 2) INTC PIRQC
+ /* ICH9 EHCI */
+ PCI_BDF(0, 29, 7) INTD PIRQD
+ /* ICH9 SATA */
+ PCI_BDF(0, 31, 2) INTA PIRQA
+ >;
+ };
};
};